如何使用服务帐户和PHP上传到Google Drive

Question

向下您可以看到我的代码，并将文件上传到我的Google驱动器。现在，我试图使用服务帐户让人们无需使用Google帐户即可将文件上传到我的Google驱动器（访问者将用他们的文件提交HTML表单，而我的应用程序将将该文件上传到我的驱动器）。但是我坚持下去。甚至找不到一个工作示例。有什么想法吗？

$client = new Google\Client();
$client->setAuthConfig('credentials.json');
$client->addScope(Google\Service\Drive::DRIVE);
$redirect_uri = 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'];
$client->setRedirectUri($redirect_uri);

if (isset($_GET['code'])) {
    $token = $client->fetchAccessTokenWithAuthCode($_GET['code']);
    $client->setAccessToken($token);

    // store in the session also
    $_SESSION['upload_token'] = $token;

    // redirect back to the example
    header('Location: ' . filter_var($redirect_uri, FILTER_SANITIZE_URL));
}
if (!empty($_SESSION['upload_token'])) {
    $client->setAccessToken($_SESSION['upload_token']);
    if ($client->isAccessTokenExpired()) {
        unset($_SESSION['upload_token']);
    }
} else {
    $authUrl = $client->createAuthUrl();
}
echo $client->getAccessToken();
if ($_SERVER['REQUEST_METHOD'] == 'GET' && $client->getAccessToken()) {
    // We'll setup an empty 1MB file to upload.
    DEFINE("TESTFILE", 'test.jpg');
    if (!file_exists(TESTFILE)) {
        $fh = fopen(TESTFILE, 'w');
        fseek($fh, 1024 * 1024);
        fwrite($fh, "!", 1);
        fclose($fh);
    }

    // This is uploading a file directly, with no metadata associated.
    $file = new Google\Service\Drive\DriveFile();
    $service = new Google_Service_Drive($client);
    $file->setName("Hello World!");
    $result = $service->files->create(
        $file,
        [
            'data' => file_get_contents(TESTFILE),
            'mimeType' => 'application/octet-stream',
            'uploadType' => 'media'
        ]
    );
    $permissionService = new Google_Service_Drive_Permission();
    $permissionService->role = "reader";
    $permissionService->type = "anyone"; // anyone with the link can view the file
    $service->permissions->create($result->id, $permissionService);

Answer 1

以下代码将向您展示如何设置服务帐户授权。

请记住，尽管文件将上传到服务帐户驱动器帐户。如果您希望它们上传到您的个人驱动器帐户。您需要与服务帐户上的驱动器帐户上共享一个目录。尽管Web应用程序像其他任何用户一样，您可以使用服务帐户电子邮件地址来执行此操作。它的属性看起来像一封电子邮件。

您应该可以删除现在拥有的验证，然后使用此验证。但是，您需要将上传元数据中的父母设置为您想要填充到的目录的父母。

// Load the Google API PHP Client Library.
require_once __DIR__ . '/vendor/autoload.php';

// Use the developers console and download your service account
// credentials in JSON format. Place the file in this directory or
// change the key file location if necessary.
putenv('GOOGLE_APPLICATION_CREDENTIALS='.__DIR__.'/service-account.json');


/**
 * Gets the Google client refreshing auth if needed.
 * Documentation: https://developers.google.com/identity/protocols/OAuth2ServiceAccount
 * Initializes a client object.
 * @return A google client object.
 */
function getGoogleClient() {
    return getServiceAccountClient();
}

/**
 * Builds the Google client object.
 * Documentation: https://developers.google.com/api-client-library/php/auth/service-accounts
 * Scopes will need to be changed depending upon the API's being accessed. 
 * array(Google_Service_Analytics::DRIVE)
 * List of Google Scopes: https://developers.google.com/identity/protocols/googlescopes
 * @return A google client object.
 */
function getServiceAccountClient() {
    try {   
        // Create and configure a new client object.        
        $client = new Google_Client();
        $client->useApplicationDefaultCredentials();
        $client->addScope(array(Google_Service_Analytics::DRIVE));
        return $client;
    } catch (Exception $e) {
        print "An error occurred: " . $e->getMessage();
    }
}

这样做会给您带来相同的服务对象。

$service = new Google_Service_Drive(getGoogleClient());

Answer 2

您可以使用。这是一个NPM软件包，允许用户使用服务帐户直接从服务器端上传文件。
它有充分的文献记载，并希望您的问题答案。